Machine for cutting handholes



q 0, 1948- A. c. COKER MACHINE FOR CUTTING HAND HOLES s She'ets-Sheet 1Filed Jfily 23, 1945 I N V EN TOR.

Nov. 30,1948. v A, okgz v2,454,3 1

MACHINE FOR CUTTING HAND Homzs Filed July 23, 1945 3 Sheets-Sheet 2 Nov.30, 1948. A. c. coKER MACHINE FOR CUTTING HAND HOLES Filed July 23, 19453 Sheets-Sheec 3 INVENTOR.

Patented Nov. 30, 1948 UNITE D STATES AT ENT F F I CE MACHINE FORCUTTING HANDHOLES Alvaflla-yboume (Joker, San Antonio, Tex.

Application July 23,1945, Serial No. 606,570

Claims. (Cl. 1454.136)

This invention relates to a machine for cutting hand holes in cases suchas commonly employed for holding beverages in bottles.

Heretofore, the operation of producing hand holes in cases has been acomparatively slow operation. due primarily to the fact that it has beennecessary to reverse the position of the work in order to produce thedesired rounded edges at bothsides of the Opening or hand hole.

An object of the present invention is togreatly simplify theconstruction of machines for the purposestated' whereby it isespeciallysuited for high speed. quantity production.

It. is a further object to provide a machine of simple construction, theworking parts of which areall accessible readily.

With the foregoing and other objects in View which will appear as thedescription proceeds, theinvention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claims, it being understood that changes may bemade in the construction and arrangement of parts without departing.from the spirit of the invention as claimed.

In the accompanying drawings, the preferred formlof. the invention hasbeen shown.

In said drawings:

Figure 1 is a top plan view of the machine.

Figure 2 is aview partly in elevation and partly in, section asv viewedfrom the right of Figure 1.

Figure 3 is a side elevation of the machine, a portion beingin section.

Referring to thefigures. by characters of ref.- erence, I designates themain frame of the maamt provides a mounting for a motor 2 adapted totransmit motion through belt and pulley mechanism 3 to a transverseshaft 4 journaled on the frame. Pulleys 5 are secured to shaft 4adjacent opposite sides of the frame and serve to transmit motionthrough belts 6' tooppositely disposed aligned spindles. 1: which arealso journaled on the frame. These spindles are spaced apart atthei'rinner ends and said ends carry replaceable boring, and reaming" bits 8which are oppositely disposed, as shown.

Secured in the frame with the spindles 1 extending" between them, areguide rods 9. These rods are parallel and are slidably engaged by therespective ends of a carriage Ill having a central longitudinal openingII. This carriage is below the level of the routing bits 8 and isadapted to be shifted along the guide rods 9 by a lever l2 fulcrumedbetween its ends, as at I3 and having chine, which can be of anysuitable proportions.

a yoke I2 at its upper end which embraces and engages a portion of thecarriage so that when the lever is shifted, the carriage is movedtherewith. A laterally tiltable pedal M is fulcrumed between its ends inthe bottom portion of the frame at one end, as shown at It and isprovided with a centrally located upwardly extending arm I6 having apivotal and sliding connection l'l with the lower end of lever l2. Thuswhen one end of the pedal is depressed, the yoke l2 and the carriage aremoved in one direction as indicated by broken lines Figure 2, and whenthe other end of the pedal is depressed, the move-- ment of the partsisreversed. Mounted in the carriage so as to rocki about a pivotalconnection I8"; is a jig l9 proportioned to receive the case end orother work to beshaped. This jig has upwardly extending side walls 2 0each of which is provided with a slot 2"! concomtrio with the axis ofmovement of the jigand proportioned to receive one of the routing bits.

From one of the walls 20- there is extendeda handle 22* while pivotallyconnected to the other side of the jig is a frame 23 havinga handle 24adaptedto" overlie the engaged work and toner mally rest close to or incontact with the handle 22 so that both can be grasped by one hand ofthe operator; The pivotal connection between frame 23 and thejig hasbeen indicated at 2-5.

In practice, the handle 24 is swung away from the handle 22 so that thework, W thus can be placed in the jig. The distance between thetworouting bits is greater than the thickness of thework, so that whenthe jig and carriage are in their normal or intermediate positions, thework will not be engaged by' the rapidly rotating bits. By drawing thehandle 24 toward the handle 22 and holdingthem fixed relative to eachother, the frame 23 will bind upon the work and hold it securely in thejig. The two handles are then used. for the purpose of rocking the jigand the work carried thereby; Beforethis is done, however, the pedal Mis pressed downwardly at oneside, thereby-causing the work to feedagainst one of the rotating'bits. While it is thus located the workis'rocked back and forth with the result that an' arcuate slot is thusformed, said slot" being of the length permitted by the slot 2! in whichthe bits work. Thereafter, the other end of thepedal' depressed with theresultthat the work is fed against the other rapidly rotating bit. Saidwork is rocked as before and thus the hand hole having both sidesrounded and properly finished is thus quickly completed. By bringing theparts to their intermediate positions, releasing the work and removingit, the machine is promptly prepared to receive another case end or thelike to be acted on.

It has been found in practice that a machine such as herein describedcan be used effectively for producing hand holes at high speed so thatproduction is thus greatly increased with a corresponding saving of timeand labor.

What is claimed is:

l. A machine for producing hand holes in case ends, including a frame,coaxial opposed routing bits mounted thereon, the distance between thebits being greater than the thickness of the work to be cut, means forrotating the bits, a carriage slidably mounted on the frame between thebits for movement in a line with the axis of the bits, whereby to shiftwork carried thereby into engagement with either bit, a substantiallyvertically disposed lever positioned below the carriage, the lever beingfulorumecl intermediate its ends to the frame, a yoke at the upper endof the lever proportioned to embrace and engage the carriage at opposedsides of the carriage, a foot pedal connected intermediate its ends tothe lower end of the lever, whereby to swing the lever in eitherdirection about its fulcrum point, a work holding jig tiltably mountedin the carriage and positioned normally to support the work between andout of contact with the respective bits, and means under the control ofthe operator for rocking the jig relative to'the carriage.

2. A machine for producing hand holes in case ends, including a frame,coaxial opposed routing bits mounted thereon, the distance between thebits being greater than the thickness of the work to be out, means forrotating the bits, a carriage slidably mounted on the frame between thebits for movement in a line with the axis of the bits, whereby to shiftwork carried thereby into engagement with either bit, a lever fulcrumedto the frame, one end of the lever being proportioned for engagementwith the carriage, means under the control of an operator at the otherend of the lever, for swinging the lever in either direction about itsfulcrum point, a work holding jig tiltably mounted in the carriage andpositioned normally to support the work between and out of contact withthe respective bits, and means under the control of the operator forrocking the jig relative to the carriage, said means comprising a handlefixedly attached to one side of the jig, and a handle pivotally attachedto the opposed side of the jig, for swinging movement into engagementwith the first named handle, whereby said handles may additionallycomprise means for clamping the work in the jig.

3. A machine for producing hand holes in case ends, including a frame,coaxial opposed routing bits mounted thereon, the distance between thebits being greater than the thickness of the Work to be cut, means forrotating the bits, parallel guide rods mounted on the frame in parallelrelation to the axis of the bits, a carriage slidably mounted on theguide rods and between the bits, pedal means under the control of anoperator for shifting the carriage along the guide rods, whereby toshift work supported by the carriage into engagement with either bit, awork holding jig pivotally mounted on the carriage for swingablemovement in a vertical are perpendicular to the axis of the bits, andmeans under the control of the operator for swinging the jig relative tothe carriage.

4. A machine for producing hand holes in case ends, including a frame,coaxial opposed routing bits mounted thereon, the distance between thebits being greater than the thickness of the work to be cut, means forrotating the bits, parallel guide rods mounted on the frame in parallelrelation to the axis of the bits, a carriage slidably mounted on theguide rods and between the bits, pedal means under the control of anoperator for shifting the carriage along the guide rods, whereby toshift work supported by the carriage into engagement with either bit, awork holding jig pivotally mounted on the carriage for swingablemovement in a vertical are perpendicular to the axis of the bits, thejig comprising opposed side walls spaced apart to receive the work, theside walls having opposed arcuate bit-receiving slots concentric withthe axis of movement of the jig, a handle fixedly attached to one of theside walls, a clamping frame pivotally connected to the opposed sidewall, and a handle on the clamping frame, the latter handle beingextended for positioning in close relation to the first named handleupon pivotal movement of the clamping frame, whereby to provide meansunder the control of'a hand of the operator for simultaneously clampingthe work in the jig, and rocking the jig in the carriage.

5. A machine for producing hand holes in case ends, including a frame,coaxial opposed routing bits mounted thereon, the distance between thebits being greater than the thickness of the work to be cut, means forrotating the bits, parallel guide rods mounted on the frame below andparallel to the axis of the bits, a carriage extending between the guiderods and slidably mounted thereon, whereby to shift work carried by thecarriage into engagement with either bit, a lever positioned below'thecarriage, fulcrumed to the frame for swingable movement in a verticalarc, means at the upper end of the lever proportioned to embrace andengage the carriage, pedal means connected to the other end of the leverunder the control of an operator, a work holding jig pivoted to thecarriage for movement in a vertical are, opposed side Walls on the jig,a handle fixedly attached to one side Wall, a clamping frame pivoted tothe other side wall, and a handle on the clamping frame positioned forengagement with the first named handle upon swinging of the clampingframe, the side walls of the jig having opposed arcuate slots formedtherein proportioned to receive the respective bits.

ALVA CLAYBOURNE: COKER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 394,879 Phillips Dec. 18, 1888485,162 Barthelmes NOV. 1, 1892 1,572,797 Hirt Feb. 9, 1926 2,380,750Gove et al July 31, 1945

